friend and this pointer help

[ecannizzo]

Can someone tell me why intLeapInd and intDayOfYear isn't getting set? (I'll only post bits of code)

<code>
class DateObj
{
//private
int intMonth,
intDay,
intYear,
intLeapInd,
intDayOfYear;
friend void LeapYear(DateObj ob);
friend void DayOfYear(DateObj ob);

public:
DateObj(int m, int d, int y);
void Display();
};

DateObj:ateObj(int m, int d, int y)
{
intMonth = m;
intDay = d;
intYear = y;
LeapYear(*this);
DayOfYear(*this);
}

void LeapYear(DateObj ob)
{
//do calc to see if leap year

if ((ob.intYear % 4 == 0) && (ob.intYear % 100 != 0 || ob.intYear % 400 == 0))
ob.intLeapInd = 1; //this is a leap year
else
ob.intLeapInd = 0; //this is not a leap year

}
</code>

Thanks!

 

[dima2]

try passing the argument by reference

the function declaration would be:
friend void LeapYear(DateObj& ob);

and it's implementation would become:
void LeapYear(DateObj& ob)
{
//keep the same code
}